|
Stringhalt is a sudden flexion of one or both hind legs in the horse, most easily seen while the horse is walking or trotting. It is most evident when the horse is backing up slowly, turning on the affected leg, or suddenly frightened. It can involve one or both hind legs of the horse. It is a spasmodic contraction of the lateral extensor tendons of the hind legs. There are four forms of stringhalt: *Australian stringhalt: a flatweed (''Hypochaeris radicata'') is the suspected cause *Pseudostringhalt: the apparent result of a painful condition in the affected leg *Unilateral stringhalt: cause unknown, but often relieved by section of the lateral extensor tendon *Bilateral stringhalt: in two out of two affected horses necropsied, abnormal thalamus Treatment varies. ==Australian stringhalt== Australian stringhalt was described and differentiated from classical stringhalt in 1884. Australian stringhalt is differentiated from classical stringhalt by the severity, occurrence of outbreaks, distinct seasonal pattern and the ability of affected horses to recover spontaneously. This condition is characterised by the sudden exaggerated flexion of either one or both hocks. This form of stringhalt most commonly occurs in the summer and autumn while horses are out on pasture. Epidemics of Australian stringhalt are usually witnessed during drought or abnormally dry conditions. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「stringhalt」の詳細全文を読む スポンサード リンク
|